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Theorem val-total-01

⊦ char < char2 ∨ char = char2 ∨ char2 < char

Type: A user defined theorem
Validity: The proof is valid.
Features:
Comment: validation
Used by:
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 3
Proof steps: 6
Used lemmas: insorted, eqpos, Char-less,
Used spec theorems:
- Used simplifier rules:
  - nat/ler
  - nat/anti
  - nat/lels